[MITgcm-support] Error with Arctic configuration and runoff file

[Karel Castro Morales]

Hi  Matt,

I used also an MITgcm Arctic configuration with climatological runoff, 
my data.exf works using:

&EXF_NML_02
  runoffstartdate1=19470115,
  runoffperiod=-12,
  runofffile = 'yourfile',

&EXF_NML_04
  runoff_interpmethod = 0,

And all the lon and lat options are commented. This works fine in my case,

Cheers,
Karel

On 18/02/2016 11:00, gmail wrote:
> Hello everybody,
> thank you very much for the suggestions.
>
> I have changed runoff_interpMethod  to 1, but this keeps giving me the 
> same "attempt to access non-existent record,” error
>
> However, I have noticed that when I use:
>>>>>  runoff_lon0       = 0.50D0,
>>>>>  runoff_lon_inc   = 1.0D0,
>>>>>  runoff_lat0       = -89.5D0,
>>>>>  runoff_lat_inc   = 1.,
>>>>>  runoff_nlon       = 360,
>>>>>  runoff_nlat       = 180,
>
> both with runoff_lat_inc    = 1., and runoff_lat_inc   = 179., as 
> someone suggested, I get a different error:
>
> forrtl: severe (19): invalid reference to variable in NAMELIST input, 
> unit 11, file /tmp/fortxB52Va, line 53, position 12
>
> I suppose this is related to the lines I add because without those 
> lines and the runofffile ones the model runs fine.
>
> Alessandro
>
>> On 17 Feb 2016, at 18:27, Dimitris Menemenlis <dmenemenlis at gmail.com 
>> <mailto:dmenemenlis at gmail.com>> wrote:
>>
>> if you use a 360x180x12 forcing file, then you need:
>>
>> &EXF_NML_04
>>  runoff_interpMethod = 1,
>>
>> (which is the default value)
>>
>>> On Feb 17, 2016, at 10:19 AM, gmail <mozzatoale at gmail.com 
>>> <mailto:mozzatoale at gmail.com>> wrote:
>>>
>>> Hi matt,
>>> Thanks for the suggestion,  I forgot to mention my data.exf is 
>>> configured for:
>>> runoff_interpMethod = 0,
>>> The runoff is indeed a 12 month climatology.
>>> In my tests I have tried the configuration you suggest and the same 
>>> error is thrown.
>>> All the best,
>>>
>>> Alessandro
>>>
>>>> On 17 Feb 2016, at 18:09, Matthew Mazloff <mmazloff at ucsd.edu 
>>>> <mailto:mmazloff at ucsd.edu>> wrote:
>>>>
>>>> Hello
>>>>
>>>> Is your runoff input a 12 month climatology without need for 
>>>> interpolation. If so you need only:
>>>>
>>>> In &EXF_NML_02
>>>> runoffperiod   = -12,
>>>> and obviosly set runoffFile
>>>>
>>>> and in  &EXF_NML_04
>>>>  runoff_interpMethod = 0,
>>>>
>>>> That works for me...
>>>>
>>>> Matt
>>>>
>>>>
>>>>
>>>>> On Feb 17, 2016, at 9:45 AM, gmail <mozzatoale at gmail.com 
>>>>> <mailto:mozzatoale at gmail.com>> wrote:
>>>>>
>>>>> Dear MITgcm users,
>>>>>
>>>>> I am currently running an Arctic configuration of the MITgcm in 3 
>>>>> different resolutions: 36km, 18km and 9km.
>>>>> I started using the ERA  dataset for forcing and all three worked 
>>>>> fine.
>>>>>
>>>>> I have now switched to the CORE2 dataset forcing and setup my 
>>>>> data.exf following the one I found here:
>>>>> http://mitgcm.org/viewvc/MITgcm/MITgcm_contrib/gael/verification/global_oce_llc90/input.core2/
>>>>>
>>>>> This new setup works fine on the 36km configuration producing 
>>>>> satisfying results.
>>>>> The problems arise with the 9km and 18km configuration. More 
>>>>> specifically the problem seems to be related to the runoff.
>>>>> Both configurations throw the following error:
>>>>>
>>>>> forrtl: severe (36): attempt to access non-existent record, unit 
>>>>> 9, file /hpcdata/scratch/am8e13/CORE_data/runoff-corev2_360x180x12.bin
>>>>>
>>>>> Here is a copy of my data.exf:
>>>>> https://github.com/AlessandroMozzato/notebooks/blob/master/data.exf
>>>>>
>>>>> I have checked the file in MATLAB and it seems fine and with the 
>>>>> right dimensions.
>>>>> I have also tried to substitute the runoff from the CORE dataset 
>>>>> with the runoff from the ERA dataset and the same error is produced.
>>>>> I have tried both of these setups for the data.exf:
>>>>>
>>>>>  runoffstartdate1 = 19470115,
>>>>>  runoffstartdate2 = 120000,
>>>>>  runoffperiod     = 2628000.0,
>>>>>  runoffperiod     = 2592000.0,
>>>>>
>>>>> and:
>>>>>
>>>>>  runoffperiod     = -12,
>>>>>
>>>>> Finally I have added the following lines to the data.exf
>>>>>
>>>>>  runoff_lon0       = 0.50D0,
>>>>>  runoff_lon_inc   = 1.0D0,
>>>>>  runoff_lat0       = -89.5D0,
>>>>>  runoff_lat_inc   = 1.,
>>>>>  runoff_nlon       = 360,
>>>>>  runoff_nlat       = 180,
>>>>>
>>>>> It is also worth noticing that removing the runoff file from 
>>>>> data.exf solves the problem and the model runs fine.
>>>>> I suspect this could be an easy fix but I couldn’t figure it how.
>>>>>
>>>>> Every suggestion would be greatly appreciated!
>>>>>
>>>>> All the best,
>>>>> Alessandro
>>
>>
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